Add file access modes to sk_exists.

include/core/SkOSFile.h

Index: include/core/SkOSFile.h
diff --git a/include/core/SkOSFile.h b/include/core/SkOSFile.h
index c9fa37ad164c1e46e05d9dd073b3435d33313c3a..9cec5a583d51c5e3644830d84bf7548aee7cfed9 100644
--- a/include/core/SkOSFile.h
+++ b/include/core/SkOSFile.h
@@ -78,7 +78,7 @@ bool    sk_fidentical(SkFILE* a, SkFILE* b);
 int     sk_fileno(SkFILE* f);
 
 // Returns true if something (file, directory, ???) exists at this path.

[mtklein, 2014/07/10 21:03:30]

// If flags is set, only return true if that something supports that mode.

Or some sort of comment reminding us what the flags argument does?

[bungeman-skia, 2014/07/10 21:50:06]

Done.

-bool    sk_exists(const char *path);
+bool    sk_exists(const char *path, SkFILE_Flags = (SkFILE_Flags)0);
 
 // Returns true if a directory exists at this path.
 bool    sk_isdir(const char *path);